function moreClick(){
	var litClassElements = getElementsByClassName('hidden');
	var more = document.getElementById("more");
	if(litClassElements.length!=0){
		more.innerHTML = "<加载中，请稍后>";
		window.setTimeout(showMore, 1000);
	}else{
		more.innerHTML = "<没有更多数据>";
	}
}
function showMore(){
	var lastShowObj = getLastShowClass();
	var showHiddenDiv = lastShowObj.nextSibling;
	showHiddenDiv.className = "show";
	var more = document.getElementById("more");
	var litClassElements = getElementsByClassName('hidden');
	if(litClassElements.length!=0){
		more.innerHTML = "<更多>";
	}else{
		more.innerHTML = "<没有更多数据>";
	}
}
function getLastShowClass(){
	var litClassElements = getElementsByClassName('show');
	return litClassElements[(litClassElements.length-1)];
}
function getElementsByClassName(n) { 
	var classElements = [];
	var allElements = document.getElementsByTagName('*'); 
	for (var i=0; i< allElements.length; i++ ) 
	{ 
		if (allElements[i].className == n ) { 
			classElements[classElements.length] = allElements[i]; //某类集合
		} 
	} 
	return classElements; 
}